<!DOCTYPE HTML>
<html>
  <head>
    <style>
      body { color: green }
    </style>
    <link rel="stylesheet"
          href="data:text/css,@media no-such-medium { body { color: red } }"
          type="text/css">
    <link rel="stylesheet"
          href="data:text/css,@media no-such-medium { body { color: red } }"
          type="text/css">
    <script>
      // Force cloning of the second linked sheet
      document.styleSheets[2].cssRules[0];
    </script>
  </head>
  <body>test</body>
</html>
